Estimating printer misregistration from color shifts: A new paradigm

Jon McElvain, Vishal Monga, Charles M. Hains, Manu Parmar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Inherent to most multi-color printing systems is the inability to achieve perfect registration between the primary separations. Because of this, dot-on-dot or dot-off-dot halftone screen sets are generally not used, due to the significant color shift observed in the presence of even the slightest misregistration. Much previous work has focused on characterizing these effects, and it is well known that dot-off-dot printed patterns result in a higher chroma (C*) relative to dot-on-dot. Rotated dot sets are used instead for these systems, as they exhibit a much greater robustness against misregistration. In this paper, we make the crucial observation that while previous work has used color shifts caused by misregistration to design robust screens, we can infact exploit these color shifts to obtain estimates of misregistration. In particular, we go on to demonstrate that even low resolution macroscopic color measurements of a carefully designed test patch can yield misregistration estimates that are accurate up-to the sub-pixel level. The contributions of our work are as follows: 1.) a simple methodology to construct test patches that may be measured to obtain misregistration estimates, 2.) derivation of a reflectance printer model for the test patch so that color deviations in the spectral or reflectance space can be mapped to misregistration estimates, and 3.) a practical method to estimate misregistration via scanner RGB measurements. Experimental results show that our method achieves accuracy comparable to the state-of-the art but expensive geometric methods that are currently used by high-end color printing devices to estimate misregistration.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE-IS and T Electronic Imaging - Color Imaging XIII
Subtitle of host publicationProcessing, Hardcopy, and Applications
DOIs
StatePublished - Jun 26 2008
EventColor Imaging XIII: Processing, Hardcopy, and Applications - San Jose, CA, United States
Duration: Jan 29 2008Jan 31 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6807
ISSN (Print)0277-786X

Other

OtherColor Imaging XIII: Processing, Hardcopy, and Applications
CountryUnited States
CitySan Jose, CA
Period1/29/081/31/08

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    McElvain, J., Monga, V., Hains, C. M., & Parmar, M. (2008). Estimating printer misregistration from color shifts: A new paradigm. In Proceedings of SPIE-IS and T Electronic Imaging - Color Imaging XIII: Processing, Hardcopy, and Applications [680715] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6807). https://doi.org/10.1117/12.766539